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Obviously, some parts of the scene benefit more from lights than the skydome. So, I want to change the probability of sampling the light or the sky depending on potential contribution. So I evaluate a random point on the skydome (importance sampled) and a random point on a random light. Based on th...

I believe "bump map" and "normal maps" are different things. They're almost the same. They contain the same information, only in different format. A bump map contains height values that a render engine can use to calculate new normals from. A normal map contains the result of th...